CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 980 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.🎯 Which CSS selector matches this element?
   <h2 class="red" id="logo">Hello</h2> (a) .red (b) li (c) #end (d) .logo
2. 2.🎯 Which CSS selector matches this element?
   <div class="note" id="main">Hello</div> (a) .big (b) #note (c) .main (d) div
3. 3.🎯 Which element does the selector #main style? (a) <li class="main"> (b) <li id="logo"> (c) <div class="star"> (d) <li id="main">
4. 4.True or false: body is a class selector. (a) False (b) True
5. 5.True or false: .menu is a class selector. (a) True (b) False
6. 6.True or false: #end is an id selector. (a) True (b) False
7. 7.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p class="star"> (c) <p id="star"> (d) <p class="menu">
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="logo">Hello</h1> (a) .menu (b) .logo (c) #menu (d) .note
10. 10.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
11. 11.🎯 Which element does the selector .red style? (a) <li class="red"> (b) <li class="box"> (c) <div class="star"> (d) <li id="red">
12. 12.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) #star (b) h1 (c) .menu (d) .star
14. 14.🎯 Which element does the selector #intro style? (a) <h2 class="note"> (b) <h1 id="main"> (c) <h1 id="intro"> (d) <h1 class="intro">
15. 15.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
16. 16.🎯 Which element does the selector .box style? (a) <li class="star"> (b) <li id="box"> (c) <li class="box"> (d) <div class="menu">
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
19. 19.True or false: img is an id selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) #top (b) div (c) #hero (d) #big
21. 21.True or false: img is a class selector. (a) False (b) True
22. 22.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
23. 23.True or false: .star is an id selector. (a) False (b) True
24. 24.True or false: li is an id selector. (a) False (b) True
25. 25.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div> (a) #star (b) #main (c) .menu (d) #intro
26. 26.🎯 Which element does the selector li style? (a) <li class="star"> (b) <span class="star"> (c) <div> (d) <p id="logo">
27. 27.True or false: .note is an element selector. (a) False (b) True
28. 28.True or false: h1 is a class selector. (a) False (b) True
29. 29.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
30. 30.True or false: p is a class selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) #note (b) .end (c) li (d) .note
32. 32.True or false: .big is an element selector. (a) False (b) True
33. 33.🎯 Which element does the selector li style? (a) <span class="box"> (b) <li class="box"> (c) <p id="main"> (d) <div>
34. 34.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) #star (b) li (c) .menu (d) .intro
35. 35.🎯 Which element does the selector #hero style? (a) <h2 class="big"> (b) <h1 id="hero"> (c) <h1 class="hero"> (d) <h1 id="top">
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="star" id="logo">Hello</h1> (a) .logo (b) .star (c) h2 (d) .menu
37. 37.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) #box (b) .star (c) .intro (d) div
38. 38.🎯 Which element does the selector #end style? (a) <p id="hero"> (b) <p class="end"> (c) <h1 class="red"> (d) <p id="end">
39. 39.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
40. 40.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector

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